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colorectal cancer

(KOH-loh-REK-tul KAN-ser)
Cancer that develops in the colon (the longest part of the large intestine) and/or the rectum (the last several inches of the large intestine before the anus).
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Parts of the colon; drawing shows the ascending colon, cecum, transverse colon, descending colon, sigmoid colon, and rectum.Enlarge this image in new window
The colon includes the ascending colon, cecum, transverse colon, descending colon, sigmoid colon, and rectum.
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